



Frankenstein - LS3 Ported Heads
Frankenstein Engine Dynamics 821/823 - LS3 Ported Heads (SET)
Fully CNC ported, Stock LS3 Valves, FED .660” Lift Valve Springs, CNC Valve Job, NO CORE CHARGE!
- Stage 1 Porting
- 4.000" Minimum bore required
- Fully 5-Axis CNC ported, 68cc chamber volume
- FED’s exclusive high performance porting programs via 5-Axis CNC – Intake/Exhaust/Chambers
- Pressure Tested for Leak Detection
- Precision Newen CNC Valve Job, which ensures near zero runout
- All Cylinder Head Sealing Surfaces Including Ends are PCD Machined, Making Sure all Surfaces are True
- Meticulous Hand Blending and Deburr
- PCD Surfacing Optimal For Modern MLS Head Gaskets
- Final Wash and Assembly
- Extreme Attention to Detail and Quality Control at Every Stage
Original: $2,800.00
-65%$2,800.00
$980.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Frankenstein Engine Dynamics 821/823 - LS3 Ported Heads (SET)
Fully CNC ported, Stock LS3 Valves, FED .660” Lift Valve Springs, CNC Valve Job, NO CORE CHARGE!
- Stage 1 Porting
- 4.000" Minimum bore required
- Fully 5-Axis CNC ported, 68cc chamber volume
- FED’s exclusive high performance porting programs via 5-Axis CNC – Intake/Exhaust/Chambers
- Pressure Tested for Leak Detection
- Precision Newen CNC Valve Job, which ensures near zero runout
- All Cylinder Head Sealing Surfaces Including Ends are PCD Machined, Making Sure all Surfaces are True
- Meticulous Hand Blending and Deburr
- PCD Surfacing Optimal For Modern MLS Head Gaskets
- Final Wash and Assembly
- Extreme Attention to Detail and Quality Control at Every Stage























